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World War II
Navy Post Office NumbersWW2 Coded Locations

Introduction

Locations appeared as postal code abbreviations
during World War II in order to keep unit locations classified.

Example:
BM3/c John Paul Jones USNR
NavAdvBase 131
FPO SF

Jones is located at the Naval Advanced Base at Noumea, New Caledonia.
The Fleet Post Office (FPO) for the Pacific region is located in San Francisco,
California.
The Fleet Post Office (FPO) for the Atlantic region is located in New York, New York.